Gatelite-(Ce)
Gatelite-(Ce) is an IMA-recognized mineral species in the silicate class, with the chemical formula (Ca,Ce)₄(Al,Mg,Fe)₄(Si₂O₇)(SiO₄)₃(O,F,OH)₃.
It crystallizes in the monoclinic crystal system (space group P2_1/a). It is a member of the Gatelite structural group.
Key properties: Mohs hardness 6–7; specific gravity 4.51; White streak; Vitreous luster.
IMA symbol Gat-Ce, IMA status: approved, named in 2001.
Found in dolomitic portions of a talc deposit.
It is found associated with Pyrite, aeschynite-(Y), dolomite, törnebohmite-(Ce), dissakisite-(Ce), talc, quartz.
The mineral was named to honor Pierre Gatel, French mineral collector, founder of the Association Française de Microminéralogie.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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